The first triangle is similar with given triangle.
Two triangles are said to be similar, when corresponding sides of both triangles are in equal proportion and corresponding angles are equal.
From first option, It is observed all the sides of triangle are in the proportion with given triangle dimensions.
Given triangles dimensions are [tex]3,4[/tex] and [tex]5.[/tex]
First option triangles has dimensions [tex]6,8[/tex] and [tex]10[/tex].
Since, [tex]\frac{3}{6} =\frac{4}{8} =\frac{5}{10}=\frac{1}{2}[/tex]
Therefore, first triangle is similar with given triangle.
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